Castrating-tool.



PATENTED AUG. 30, .1904.

P. STARR.

GASTRATING TOOL.

APPLICATION FILED OUT. 2B, 1903.

N0 MODEL.

UNTTED STATES FELIX STARR, OF

Patented August 30, 1904.

FOSSIL, OREGON.

CASTRATlNG-TOOL.

SPECIFICATION forming part of Letters Patent No. 768,826, dated August30, 1904..

Application filed October 28, 1903.

To all whom it may concern.-

Be itknown that I, FELIX STARR, a citizen of the United States, residingat Fossil, in the county of IVheeler and State of Oregon, have inventeda new and useful (lastrating-Tool, of which the following is aspecification.

My invention relates to castrating-tools, and has for its object thehandy combination, without any unnecessary parts, of a cutting-blade anda pair of coacting grippers, the latter taking the place of the toothedinstruments now in common use and which have many objectionablefeatures.

My invention consists of the novel features of construction andcombination of parts hereinafter described, and particularly pointed outin the claims.

a perspective view of my device, the parts being thrown into positionfor using the cutting' blade. Fig. 2 is a perspective view of my device,the parts being in position for using the grippers. Fig. 3 is a planView of my device. Fig. 1 is a detail side elevation showing the mannerof securing the spring in place. Fig.

- 5 is a detail view of construction; and Fig. 6

is a cross-section through the blade, showing the manner in which it isheld in place.

In constructing a tool of this kind I employ the compound curved handleA, carrying at one end the gripping-plate A, which plate is formed witha flat under surface. The opposite end portion of the handle A islongitudinally slotted, as indicated at A in Fig. 6. The central portionof the handle is reduced in thickness, as shown at A The slotted orgrooved portion A has inwardly inclined walls, the distance between saidwalls being greatest at the bottom of the groove. In this groove slidesa wedge-shaped blade B, which blade has a perforation formed therein.The edges of the groove are notched. The blade is placed in position bysliding it in the groove until the perforation of the blade registerswith the notched portion of the handle A, and a pin B is forced into theperforation, the ends of thepin resting in the notches. The coactingcurved handle 0 is shorter than the handle A and carries at one end thegrippingplate C, similar in size and shape to the plate Serial No.178,928. (No model.)

A, and these two plates are adapted to bearthe one upon the other. Theforward portion of the handle 0 is reduced in thickness at C and thisreduced portion fits in the reduced portion A and the two handles arepivoted together, as clearly shown in the drawings. The handle C iscontinued by means of a handle portion C reduced at one end and thereduced portion pivoted to the forward end of the reduced portion 0 asshown at C. The non-reduced end of the handle C is curved sharply andserves as a hand-guard, as shown at C A spiral spring I) is arrangedbetween the handles A and G, to the rear of the pivotal portion, theends of the spring encircling and being secured to lugs D, carried bythe handles A and C, respectively. In the accompanying drawings, Figure1 1s In use when'the knife B is to be used the handle C is swungrearward, the back of the handle C resting on the back of the rearportion of the handle A, as shown in Fig. 1, the curved portion Gforming a rear guard and preventing the tool froin being jerked orwrenched from the hand. When the grippers A G are to be used, the handleis thrown forward, resting over the edge of the blade B and the curvedportion C curving downward and acting as a shield or guard for thepoint-of the blade, thus obviating any danger of the hand being cut bythe point of the blade should the instrument slip when in use.

From the above description it will be seen that I have a tool of thiskind compact and handy in form and simple and durable in construction.It will also be noted that by removing the pin B the blade can bedetached and a new blade inserted or the old blade sharpened and putback in place. The wedge shape of the blade and converging walls of thegroove prevent the blade being lifted from the groove, and the pinprevents longitudinal movement of the blade in the groove.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A tool of the kind described comprising a compoundcurved handlehaving a gripperplate at one end and a cutting-blade at the oppositeend, a short handle pivoted to the central portion of the compoundcurved handle and carrying at one end a gripper-plate adapted to coactwith the plate carried by the first-mentioned handle, and a curvedhandle pivoted to the end of the short handle opposite thegripper-plate, the said last-mentioned handle being adapted to lie backon the rear portion of the first-mentioned handle, and to be thrownforward and cover the blade.

2. A tool of the kind described comprising a handle carrying a blade atone end and one of a pair of grippers at the opposite end, a secondblade pivoted to the first and carrying the coacting gripper member, anda curved handle-section pivoted to the second handle, the last-mentionedhandle being adapted to rest on the back of the first-mentioned handlewhen the blade is in use, and to rest over and cover the blade when thegrippers are in use, the extreme end of the curved pivoted handleforming a guard for the hand in one position and a shield for the pointof the blade ing a notched portion, and a pin fitting through v theblade and having its ends adapted to rest inthe notched portion of thewalls of the groove.

FELIX STARR. WVitnesses:

O. B. ROBERTSON, JOHN A. COLLIER.

